Abstract
Modified sensing membranes based on fluorecence quenching were prepared by the sol-gel method, using formamide as the drying control chemical additive, tetraethoxysilane as the main material, Ru (phen)3 Cl2 as the indicator. The membrane with the optimum thickness of 20–50μm is uniform and crack-free, in which the indicator has a very small leaking rate. The membrane is immersed in water for 50h, the membrane sensing parameter M decreases by less than 5%. The fiber optic oxygen sensor with the sensing membrane has a detection limit of 5×10−6 M (ppm), a response time of less than 30s, excellent reproducibility and stability.
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References
Xin Lu, M A Winnik. Luminescence Quenching in Polymer/Filler Nanocomposite Films Used in Oxygen Sensors.Chem. Mater, 2001, 13:3449–3467
Jiang Desheng, Chen Xing, Liu Er,et al. Preparation and Properties of Sensing Membrane for Fiber Optic Oxygen Sensor.Journal of Wuhan University of Technology—Mater. Sci. Ed, 2002, 18(2):51–53
Xing Wanli, Chao Fuhua, Chen Qizhou et al. Application of solgel Technology in the Fields of Chemical Sensors and Biosensors.Chemistry Magazine, 1999, (6):39–43 (in Chinese)
M Morisawa, G Vishnoi, T Hosska and S Muto. Comparative Studies on Sensitivity and Stability of Fiber-optic Oxygen Sensor Using Several Cladding Polymers.Jpn. Jappl. Phys., Part1, 1998, 37(8):4620
Li Qingwen, Wang Mingyi, Luo Guoan. Application of sol-gel Technology in the Field of Biosensors.Chemistry Magazine, 2000, (5):14–18 (in Chinese)
N B James, J M Thomas. Kinetics of the Oxidation of Fe (H2O)6/2+ by Polypridine Complexes of Ru(II) Negative Enthalpies of Action.J. Am. Chem. Soc., 1973, 95:3158–3164
D J Wright and N A J M Sommerdijk.Sol-Gel Materials: Chemistry and Applications? London: Gordon and Breach Science publishers, 2001
C J Brinker and G W Schever.Sol-Gel Science—the Physics and Chemistry of Sol-Gel Processing. San Diego: Academic Press Inc, 1990
Chen Guozhen.Fluorescence analysis. Beijing: Science Press, 1990(in Chinese)
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HANG Jun: Born in 1958
Funded by the National Natural Science Foundation of China (No. 60377032), the Key Scientific Project Foundation of Hubei Province (No. 2001AA1A02) and Natural Science Foundation of Hubei Province (No. 2001ABB074)
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Jun, H., Yun, H., Tian-hua, Z. et al. Preparation and properties of modified sol-gel sensing membrane for fiber optic oxygen sensor. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 19, 19–22 (2004). https://doi.org/10.1007/BF02838354
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DOI: https://doi.org/10.1007/BF02838354